mirror of https://github.com/microsoft/clang.git
170 lines
7.8 KiB
C++
170 lines
7.8 KiB
C++
// RUN: %clang_cc1 -std=c++14 -verify -fexceptions -fcxx-exceptions %s
|
|
// RUN: %clang_cc1 -std=c++17 -verify -fexceptions -fcxx-exceptions %s -Wno-dynamic-exception-spec
|
|
// RUN: %clang_cc1 -std=c++14 -verify -fexceptions -fcxx-exceptions -Wno-c++1z-compat-mangling -DNO_COMPAT_MANGLING %s
|
|
// RUN: %clang_cc1 -std=c++14 -verify -fexceptions -fcxx-exceptions -Wno-noexcept-type -DNO_COMPAT_MANGLING %s
|
|
|
|
#if __cplusplus > 201402L
|
|
|
|
template<typename T> void redecl1() noexcept(noexcept(T())) {} // expected-note {{previous}}
|
|
template<typename T> void redecl1() noexcept(noexcept(T())); // ok, same type
|
|
template<typename T> void redecl1() noexcept(noexcept(T())) {} // expected-error {{redefinition}}
|
|
|
|
template<bool A, bool B> void redecl2() noexcept(A); // expected-note {{previous}}
|
|
template<bool A, bool B> void redecl2() noexcept(B); // expected-error {{does not match previous}}
|
|
|
|
// These have the same canonical type, but are still different.
|
|
template<typename A, typename B> void redecl3() throw(A); // expected-note {{previous}}
|
|
template<typename A, typename B> void redecl3() throw(B); // expected-error {{does not match previous}}
|
|
|
|
typedef int I;
|
|
template<bool B> void redecl4(I) noexcept(B);
|
|
template<bool B> void redecl4(I) noexcept(B); // expected-note {{could not match 'void (I) noexcept(false)' (aka 'void (int) noexcept(false)') against 'void (int) noexcept'}}
|
|
|
|
void (*init_with_exact_type_a)(int) noexcept = redecl4<true>;
|
|
void (*init_with_mismatched_type_a)(int) = redecl4<true>;
|
|
auto deduce_auto_from_noexcept_function_ptr_a = redecl4<true>;
|
|
using DeducedType_a = decltype(deduce_auto_from_noexcept_function_ptr_a);
|
|
using DeducedType_a = void (*)(int) noexcept;
|
|
|
|
void (*init_with_exact_type_b)(int) = redecl4<false>;
|
|
void (*init_with_mismatched_type_b)(int) noexcept = redecl4<false>; // expected-error {{does not match required type}}
|
|
auto deduce_auto_from_noexcept_function_ptr_b = redecl4<false>;
|
|
using DeducedType_b = decltype(deduce_auto_from_noexcept_function_ptr_b);
|
|
using DeducedType_b = void (*)(int);
|
|
|
|
static_assert(noexcept(init_with_exact_type_a(0)));
|
|
static_assert(noexcept((+init_with_exact_type_a)(0)));
|
|
static_assert(!noexcept(init_with_exact_type_b(0)));
|
|
static_assert(!noexcept((+init_with_exact_type_b)(0)));
|
|
|
|
// Don't look through casts, use the direct type of the expression.
|
|
// FIXME: static_cast here would be reasonable, but is not currently permitted.
|
|
static_assert(noexcept(static_cast<decltype(init_with_exact_type_a)>(init_with_exact_type_b)(0))); // expected-error {{is not allowed}}
|
|
static_assert(noexcept(reinterpret_cast<decltype(init_with_exact_type_a)>(init_with_exact_type_b)(0)));
|
|
static_assert(!noexcept(static_cast<decltype(init_with_exact_type_b)>(init_with_exact_type_a)(0)));
|
|
|
|
template<bool B> auto get_fn() noexcept -> void (*)() noexcept(B) {}
|
|
static_assert(noexcept(get_fn<true>()()));
|
|
static_assert(!noexcept(get_fn<false>()()));
|
|
|
|
namespace DependentDefaultCtorExceptionSpec {
|
|
template<typename> struct T { static const bool value = true; };
|
|
|
|
template<class A> struct map {
|
|
typedef A a;
|
|
map() noexcept(T<a>::value) {}
|
|
};
|
|
|
|
template<class B> struct multimap {
|
|
typedef B b;
|
|
multimap() noexcept(T<b>::value) {}
|
|
};
|
|
|
|
// Don't crash here.
|
|
struct A { multimap<int> Map; } a;
|
|
|
|
static_assert(noexcept(A()));
|
|
}
|
|
|
|
#endif
|
|
|
|
namespace CompatWarning {
|
|
struct X;
|
|
|
|
// These cases don't change.
|
|
void f0(void p() throw(int));
|
|
auto f0() -> void (*)() noexcept(false);
|
|
|
|
// These cases take an ABI break in C++17 because their parameter / return types change.
|
|
void f1(void p() noexcept);
|
|
void f2(void (*p)() noexcept(true));
|
|
void f3(void (&p)() throw());
|
|
void f4(void (X::*p)() throw());
|
|
auto f5() -> void (*)() throw();
|
|
auto f6() -> void (&)() throw();
|
|
auto f7() -> void (X::*)() throw();
|
|
#if __cplusplus <= 201402L && !defined(NO_COMPAT_MANGLING)
|
|
// expected-warning@-8 {{mangled name of 'f1' will change in C++17 due to non-throwing exception specification in function signature}}
|
|
// expected-warning@-8 {{mangled name of 'f2' will change in C++17 due to non-throwing exception specification in function signature}}
|
|
// expected-warning@-8 {{mangled name of 'f3' will change in C++17 due to non-throwing exception specification in function signature}}
|
|
// expected-warning@-8 {{mangled name of 'f4' will change in C++17 due to non-throwing exception specification in function signature}}
|
|
// expected-warning@-8 {{mangled name of 'f5' will change in C++17 due to non-throwing exception specification in function signature}}
|
|
// expected-warning@-8 {{mangled name of 'f6' will change in C++17 due to non-throwing exception specification in function signature}}
|
|
// expected-warning@-8 {{mangled name of 'f7' will change in C++17 due to non-throwing exception specification in function signature}}
|
|
#endif
|
|
|
|
// An instantiation-dependent exception specification needs to be mangled in
|
|
// all language modes, since it participates in SFINAE.
|
|
template<typename T> void g(void() throw(T)); // expected-note {{substitution failure}}
|
|
template<typename T> void g(...) = delete; // expected-note {{deleted}}
|
|
void test_g() { g<void>(nullptr); } // expected-error {{deleted}}
|
|
|
|
// An instantiation-dependent exception specification needs to be mangled in
|
|
// all language modes, since it participates in SFINAE.
|
|
template<typename T> void h(void() noexcept(T())); // expected-note {{substitution failure}}
|
|
template<typename T> void h(...) = delete; // expected-note {{deleted}}
|
|
void test_h() { h<void>(nullptr); } // expected-error {{deleted}}
|
|
}
|
|
|
|
namespace ImplicitExceptionSpec {
|
|
struct S {
|
|
~S();
|
|
void f(const S &s = S());
|
|
};
|
|
S::~S() {}
|
|
}
|
|
|
|
namespace Builtins {
|
|
// Pick two functions that ought to have the same noexceptness.
|
|
extern "C" int strcmp(const char *, const char *);
|
|
extern "C" int strncmp(const char *, const char *, decltype(sizeof(0))) noexcept;
|
|
|
|
// Check we recognized both as builtins.
|
|
typedef int arr[strcmp("bar", "foo") + 4 * strncmp("foo", "bar", 4)];
|
|
typedef int arr[3];
|
|
}
|
|
|
|
namespace ExplicitInstantiation {
|
|
template<typename T> void f() noexcept {}
|
|
template<typename T> struct X { void f() noexcept {} };
|
|
template void f<int>();
|
|
template void X<int>::f();
|
|
}
|
|
|
|
namespace ConversionFunction {
|
|
struct A { template<typename T> operator T() noexcept; };
|
|
int a = A().operator int();
|
|
}
|
|
|
|
using size_t = decltype(sizeof(0));
|
|
|
|
namespace OperatorDelete {
|
|
struct W {};
|
|
struct X {};
|
|
struct Y {};
|
|
struct Z {};
|
|
template<bool N, bool D> struct T {};
|
|
}
|
|
void *operator new(size_t, OperatorDelete::W) noexcept(false);
|
|
void operator delete(void*, OperatorDelete::W) noexcept(false) = delete; // expected-note {{here}}
|
|
void *operator new(size_t, OperatorDelete::X) noexcept(false);
|
|
void operator delete(void*, OperatorDelete::X) noexcept(true) = delete; // expected-note {{here}}
|
|
void *operator new(size_t, OperatorDelete::Y) noexcept(true);
|
|
void operator delete(void*, OperatorDelete::Y) noexcept(false) = delete; // expected-note {{here}}
|
|
void *operator new(size_t, OperatorDelete::Z) noexcept(true);
|
|
void operator delete(void*, OperatorDelete::Z) noexcept(true) = delete; // expected-note {{here}}
|
|
template<bool N, bool D> void *operator new(size_t, OperatorDelete::T<N, D>) noexcept(N);
|
|
template<bool N, bool D> void operator delete(void*, OperatorDelete::T<N, D>) noexcept(D) = delete; // expected-note 4{{here}}
|
|
namespace OperatorDelete {
|
|
struct A { A(); };
|
|
A *w = new (W{}) A; // expected-error {{deleted function}}
|
|
A *x = new (X{}) A; // expected-error {{deleted function}}
|
|
A *y = new (Y{}) A; // expected-error {{deleted function}}
|
|
A *z = new (Z{}) A; // expected-error {{deleted function}}
|
|
|
|
A *t00 = new (T<false, false>{}) A; // expected-error {{deleted function}}
|
|
A *t01 = new (T<false, true>{}) A; // expected-error {{deleted function}}
|
|
A *t10 = new (T<true, false>{}) A; // expected-error {{deleted function}}
|
|
A *t11 = new (T<true, true>{}) A; // expected-error {{deleted function}}
|
|
}
|